Concentrator.



(No Model.)

S. W. TRAYLOR.

CONCENTBATOR.

( Application filed Jan. 16, 1901.;

Patented Dec. 3, l90l.

2 Sheets-Sheet I.

E M QQ No. 687,908. Patented Dec. 3, i901.

s. w. TRAYLOR.

GONCENTRATOR.

(Application filed Jan. 16, 1901.)

2 Sheets-Sheet 2.

(No Model.)

We/zfm;

UNITED STATES ATENT Fries.

SAMUEL W. TRAYLOR, OF DENVER, COLORADO.

CONCENTRATOR.

SFEOIFIOATIOI? forming part of Letters Patent No. 687,908, datedDecember 3, 1901. Application filed January 16, 1901. Serial No. 43,544.(No model.)

To 'ztZZ whom, it may concern.-

Beit known that I, SAMUEL W. TRAYLOR, a citizen of the United States ofAmerica,residing at Denver, in the county of Arapahoe and 5 State ofColorado, have invented certain new and useful Improvements inConcentrators; and I do declare the following to be a full,clear, andexact description of the invention, such as will enable others skilledin the art to which to it appertains to make and use the same,refe'r'ence being had to the accompanying drawings, and to the lettersand figures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in concentrators; and it consistsof the features, arrangements, and combinations hereinafter describedand claimed, all of which will be fully understood by reference to theaccomo panying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a top or plan View of my improvedconcentrating-table. 2 is a rear end view of the same. Fig. 3

2 5 is a section taken on the line a m, Fig. 4, shown on alarger scale.Fig. 4 is an underneath View of the table. Fig. 5 is a side elevation ofthe same. Fig. 6 is a section taken on the line 'y y, Fig. 4, the partsbeing enlarged.

The same reference characters indicate the same parts in all the views.

Let the numeral designate the table, which is mounted to vibrate orreciprocate longi- 3 5 tudinally on a suitable stationary support 6. Anysuitable means maybe employed to impart the longitudinal movement to thetable. As shown in the drawings, a pitmau 7, operated by an eccentric 9on a shaft 8, is em- 40 ployed. This movement has a tendency to causethe material fed from a pulp-box 10 to travel in the direction of thearrow. (See Fig. 1.) For convenience of description the left-handextremity of the table, referring to Fig. 1, will be termed its head andthe opposite extremity the foot or tail of the table. This table may betransversely inclined or not, as may be desired. If inclined, it will bedownwardly from the feed-box 10,

whose location will be at the upper edge of the table.

At the tail of the table is located an inclined surface 13, which slopesdownwardly from one cornerAtoward the surface B of the table. Thissurface 13 may consist of canvas, thin sheet metal, or any suitable ordesirable material. The specific construction shown in the drawings willbe described, though it must be understood that any other suitableconstruction may be employed. Thissurface 13, as shown in the drawings,is composed of canvas and is triangular in shape, extending from thecorner A of the table to a line 0 running diagonally from the corner l)of the table. The canvas is fastened to the body of the table at thediagonal line C. The corner of the canvas opposite this line issupported by a spring 14, which may be of any suitable construction. Tothe corner A of the table is attached 'a bracket 15, which projectsupwardly sufficiently to give the adjacent corner of the canvas thedesired elevation. To this bracket is attached one extremity of thespring 14, while the other extremity is connected with the canvas bymeans of a hook which engages a reinforcing-strip attached to the cornerof the canvas. Attached to the under surface of the canvas, by means ofbolts 16, (see Fig. 6,) are a number of transverse metal strips 17,forming springs. A bar 18 is connected with each spring 17 by means of aclip 19,which is slidingly connected with the spring 17 and secured tothe bar by a bolt 19, passing through the slot 18, formed in the bar.The forward extremity of the bar 18 is arranged to telescope in a sleeve20, pivotally connected with the table, as shown at 21.' The bar 18 isactuated to regulate thearca of the inclined surface of the table bymeans of a screw-shaft 22, journale'd in the framework of the table.This screw-shaft passes through a nut 23, connected with the bar 18 by athreaded shank 23*, which passes through a slot 18 of the bar and issuitably secured thereto by nuts and washers. (See Fig. 3.) Thescrew-shaft 22 is provided at one extremity with a crank 24. By turningthis crank the bar 18 may be moved in a horizontal plane or in a planeparallel with the surface B of the table in either direction, ascircumstances may require. This bar turns on the pivot-bolt 21 as acenter. This bolt is located near the edge of the table and in thevicinity of the rear extremity of the feed-box too 10. Theoretically thebar 18 may occupy a position coinciding or approximately coinciding withthe line C or coinciding with the line extending diagonally across thetable from the corner 0, though in actual operation it would probablynever occupy this position. The movement of the bar 18 through theinstrnmentality of the screw-shaft is permitted by virtue of the slotsthrough which the bolts connecting the bar with the springs 17 pass andalso by reason of the fact that the threaded shank 23 of the nut 23 alsopasses through a slot in the said bar. The position of this bardetermines the space F at the foot of the table for the discharge of theconcentrates. This space has width from the corner D of the table to therear extremity of the bar 18. As the bar is moved in the direction ofthe arrow at in Fig. 1 the canvas 13 is drawn down to a horizontal planeor to a plane coinciding with the surface B of the table. During thisoperation the clips 19, moving with the bar, slide on the springs 17,which are connected with the under surface of the canvas, as heretoforeexplained. The springs 17 are of unequal length, the longest being atthe foot of the table. The other springs decrease in length toward theangle formed by the line C and the side of the table intersected by saidline.

In the operation of my improved concentrator it is given a longitudinalreciprocation or vibration of a character calculated to carry thematerial in the direction indicated by the arrow 0. The material to betreated is fed in the form of pulp from the box 10 to the surface B ofthe table. The mineral values or concentrates being heaviest settle tothe bottom under the influence of the tables motion and travelrearwardly in contact with the surface of the table, while the gangue iscarried transversely across the table and discharged over the edge E,which is lowest if the table is transversely inclined. The discharge ofthe gangue is facilitated by the action of the wash-water from thetrough 12. The concentrates move rearwardly in the direction of thearrow 0 until they reach the line of the bar 18 or the line where thesurface 13 begins its upward inclination. The concentrates then passdiagonally across the table along this line and are discharged over thepart F of the tail of the table between the corner D and the rearextremity of the bar 18. The concentrates normally travel rearwardlyfaster than the gangue, and when they reach the diagonal line 0 theycrowd the gangue toward the gangue-discharge edge E of the table. Byadjusting the bar 18 the width of the space F may be varied at will. Thewidth of this space will be determined by circumstances. If the personin charge of the table notices any gangue discharged at the tail of thetablethat is to say, between the concentrate-discharge and the cornerD-he knows that the space F is too wide. Hence he will move the bar 18in the direction opposite the arrow at until all the gangue isdischarged over the edge E of the table at the left of the corner D,(see Fig. 1,) which is the point of division between the gangue and theconcentrate discharge. This adjustable feature makes it practicable toaccurately separate the mineral values from the gangue. If he noticesany concentrates discharged at the left of the corner D, (referring toFig. 1,) he knows that the space F is too narrow. Hence he will move thebar 18 in the direction of the arrow at until the entireconcentrate-discharge is between the corner D and the extremity of thebar 18.

The portion of the canvas 13 located between the line C and the bar 18and lying in the plane of the surface 13 of the table rests ontransverse bars 26, (see Fig. 6,) which are bolted at their extremitiesto bars 25 underneath. The top of each bar 25 is cut away beneath thebar 26 to allow the pivoted bar 18 to move between the two bars 25 and26. (See Fig. 2.)

Having thus described my invention, what I claim is- 1. Aconcentrating-table provided with an adjustable inclined surface locatedat the tail of the table and extending diagonally across the same, thesaid surface sloping downwardly toward the concentrating-surface of thetable and being adjustable independently of the concentrating surfacewhereby the concentrate-discharge at the tail of the table may beregulated and controlled.

2. In a concentrator the combination of a table havin g a triangularinclined surface, 10- cated at one corner of its tail extremity andsloping downwardly toward the working surface of the table, and meansfor adjusting the area of said inclined surface to regulate and controlthe concentrate-discharge.

3. The combination of a table having a triangular inclined surfacelocated at one corner of the tail thereof, said surface being yieldinglysupported at said corner and sloping downwardly toward theconcentrating-surface of the table, and suitable means for rogu latingthe area of said inclined surface for the purpose set forth.

4. In a concentrator, the combination of a table having ayieldingly-supported inclined surface located at one corner of the tailthereof, and sloping downwardly toward its concentrating-surface, a barpivoted to swing in a plane parallel with the concentrating-surface ofthe table and movably connected with the inclined surface, whereby asthe bar is moved, the area of the said inclined surface may be increasedor diminished at will.

5. The combination of a table having a yieldingly-supported inclinedsurface located at one corner of the tail thereof, and slopingdownwardly to the concentrating-surface of the table, springs connectedwith said inclined surface underneath, and a bar slidingly connectedwith said springs, said bar being pivoted at one'extremity and arrangedIto ceases to swing below and in a plane parallel with l a pivoted barslidingly connected with said the concentrating-surface of the table,wheresprings, and a screw-shaft connected with the by as the bar ismoved, the area of the inbar whereby as the shaft is turned, the barclined surface may be regulated at will, and may be adjusted to regulatethe area of the 15 5 a greater or less portion of the inclined sursaidinclined surface.

face, made to coincide with the plane of the In testimony whereof Iaffix my signature conoentratingsurface of the table. in presence of twoWitnesses.

6. The combination of a concentrating-table SAMUEL W.- TRAYLOR. having ayieldingly-supported inclined sur- Witnesses: :0 face located at onecorner of the tail thereof, DORA C. SHIOK,

springs attached to said surface underneath, MARY C. LAMB,

